Answer:
Sin(R) = 15/17
Cos(R) = 8/17
Tan(R) = 15/8
Step-by-step explanation:
Sin = Opp./Hypo, Cos = Adj./Hypo. and Tan = Opp./Adj.
So
Sin(R) = Opp./Hypo = 60/68 = 15/17
Cos(R) = Adj./Hypo =32/68 = 8/17
Tan(R) = Opp./Adj. = 60/32 = 15/8
Well this triangles angles have to add up to 180
If E is a perpendicular bisector with V so V= 90 degrees
and E=45 degrees
90+45=135 degrees
180 degrees -135 degrees =A) S = 45 degrees.
B) I conclude VES is a isoceles triangle because it has two corresponding angles.
C) This is a complicated one lets work this out in the comment section...
D) Same as C
Quadratic
y = ax^2 + bx + d
c (x) = ax^2 + bx + d
c (3) = a (3^2) + b (3) + d
c (3) = 9a + 3b + d = 15.50
c (7) = a (7^2 + b (7) + d
c (7) = 49a + 7b + d = 23.50
c (12) = a (12^2) + b (12) + d
c (12) = 144a + 12b + d = 56
solve using simultaneous equations... to get a b and d
use that to solve for x = 5
hope this helps?